// functions2.rs
// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a hint.

// 函数形参需要显式声明，对于部分通过特征来约束的形参可以 arg: impl trait;

fn main() {
    call_me(3);
}

fn call_me(num: i32) {
    for i in 0..num {
        println!("Ring! Call number {}", i + 1);
    }
}
